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allen
03-19-2014, 07:51 AM
Hello Everyone,

I am newbie to CAN Bus, I have done some google on it, but i want some clarification.

1.If am having CAN controller inbuilt on my Microcontroller(say STM32), it is having CAN_H and CAN_L. Can i connect these CAN_H and CAN_L lines to other CAN device to form a CAN network. Is CAN tranceiver is needed? or can i connect One CAN device CAN_H to other CAN device CAN_H and same for CAN_L also.

2. If i want to send some message to CAN bus, how and where can i send, since there is two lines CAN_H and CAN_L. and through which pin will receive data from the BUS. is there any transmitter and receiver Pin as in UART

3. What is the difference between CAN and CANopen. Normally CAN data rate is max 1Mbps, is CANopen also has same datarate.